package com.wzy.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.wzy.reggie.common.R;
import com.wzy.reggie.dto.DishDto;
import com.wzy.reggie.entity.Category;
import com.wzy.reggie.entity.Dish;
import com.wzy.reggie.entity.DishFlavor;
import com.wzy.reggie.service.CategoryService;
import com.wzy.reggie.service.DishFlavorService;
import com.wzy.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@Slf4j
@RestController
@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private DishService dishService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info("dishDto:{}",dishDto);
        dishService.saveWithFlavor(dishDto);
        //清理所有菜品的缓存数据
        //Set keys = redisTemplate.keys("dish_*");
        // redisTemplate.delete(keys);
        //清理某个分类下的菜品缓存数据
        String key = "dish_" + dishDto.getCategoryId() + "_1";
        redisTemplate.delete(key);
        return R.success("新增菜品成功");
    }
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        //分页构造器
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();
        //构造条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name!=null,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list= records.stream().map((item)->{
            DishDto dishDto = new DishDto();
            //将item除了categoryName以外的属性拷贝到dishDto
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);
            //根据id查询分类对象
            if(category!=null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){

        DishDto byIdWithFlavor = dishService.getByIdWithFlavor(id);

        return R.success(byIdWithFlavor);
    }
    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info("dishDto:{}",dishDto);
        dishService.updateWithFlavor(dishDto);
        //清理所有菜品的缓存数据
        //Set keys = redisTemplate.keys("dish_*");
       // redisTemplate.delete(keys);
        //清理某个分类下的菜品缓存数据
        String key = "dish_" + dishDto.getCategoryId() + "_1";
        redisTemplate.delete(key);
        return R.success("修改菜品成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     *//*
    @GetMapping("/list")
    public R<List<Dish>> list(Dish dish){
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);
        return R.success(list);
    }
*/
    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        List<DishDto> dtoList = null;
        //动态构造key
        String key = "dish_" + dish.getCategoryId() + "_" + dish.getStatus();
        //先从redis中获取缓存数据
        dtoList = (List<DishDto>) redisTemplate.opsForValue().get(key);
        //如果存在 直接返回，无需查询数据库
        if(dtoList!=null){
            return R.success(dtoList);
        }

        //如果不存在，需要查询数据库，将查询的菜品数据缓存到redis中
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);
        dtoList= list.stream().map((item)->{
            DishDto dishDto = new DishDto();
            //将item除了categoryName以外的属性拷贝到dishDto
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);
            //根据id查询分类对象
            if(category!=null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            Long id = item.getId();//当前菜品的id
            LambdaQueryWrapper<DishFlavor> dishFlavorLambdaQueryWrapper = new LambdaQueryWrapper<>();
            dishFlavorLambdaQueryWrapper.eq(DishFlavor::getDishId,id);
            //select *from dish_flavor where dish_id = ?
            List<DishFlavor> list1 = dishFlavorService.list(dishFlavorLambdaQueryWrapper);
            dishDto.setFlavors(list1);
            return dishDto;
        }).collect(Collectors.toList());
        //如果不存在，需要查询数据库，将查询到的菜品信息缓存到数据库
        redisTemplate.opsForValue().set(key,dtoList,60, TimeUnit.MINUTES);
         return R.success(dtoList);
    }

    /**
     * 菜品停售/批量停售
     * @param ids
     * @return
     */
    @PostMapping("/status/0")
    public R<String> stop(@RequestParam List<Long> ids){
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.in(Dish::getId,ids);
        List<Dish> list = dishService.list(dishLambdaQueryWrapper);
        list=list.stream().map((item)->{
            item.setStatus(0);
            return item;
        }).collect(Collectors.toList());
        dishService.updateBatchById(list);
        return R.success("更新成功");
    }
    /**
     * 菜品起售/批量起售
     * @param ids
     * @return
     */
    @PostMapping("/status/1")
    public R<String> begin(@RequestParam List<Long> ids){
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.in(Dish::getId,ids);
        List<Dish> list = dishService.list(dishLambdaQueryWrapper);
        list=list.stream().map((item)->{
            item.setStatus(1);
            return item;
        }).collect(Collectors.toList());
        dishService.updateBatchById(list);
        return R.success("更新成功");
    }

    /**
     * 删除菜品
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){
        dishService.deleteWithFlavor(ids);
        //清理所有菜品的缓存数据
        Set keys = redisTemplate.keys("dish_*");
        redisTemplate.delete(keys);
        return R.success("删除成功");
    }
}
